// vim: set sts=8 ts=2 sw=2 tw=99 et:
//
// Copyright (C) 2013, David Anderson and AlliedModders LLC
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//
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// modification, are permitted provided that the following conditions are met:
//
//  * Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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//    this list of conditions and the following disclaimer in the documentation
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#include <amtl/am-bits.h>
#include <gtest/gtest.h>
#include "runner.h"

using namespace ke;

TEST(Bits, Multiply) {
    EXPECT_TRUE(IsUintMultiplySafe<uint32_t>(0x80000000, 1));
    EXPECT_FALSE(IsUintMultiplySafe<uint32_t>(0x80000000, 2));
}

TEST(Bits, MallocAlignment) {
    EXPECT_GE(kMallocAlignment, (size_t)16);
}

TEST(Bits, FindLeftmostBit) {
    EXPECT_EQ(FindLeftmostBit32(0x7f), 6);
    EXPECT_EQ(FindLeftmostBit64(0x7f), 6);

    EXPECT_EQ(FindLeftmostBit32(0xffffffff), 31);
    EXPECT_EQ(FindLeftmostBit64(0xffffffffffffffffULL), 63);
}

TEST(Bits, FindRightmostBit) {
    EXPECT_EQ(FindRightmostBit(0x7d), 0);
    EXPECT_EQ(FindRightmostBit(0x7d), 0);

    EXPECT_EQ(FindRightmostBit(0xffffffc0), 6);
    if (sizeof(size_t) == 8)
      EXPECT_EQ(FindRightmostBit(0xfffc000000000000ULL), 50);
    else
      EXPECT_EQ(FindRightmostBit(0xfffc000000000000ULL), 0);
}
